:root{--blue:#0f62fe;--blue-2:#0a4ed1;--ink:#101828;--muted:#5f7293;--line:#dce5f2;--surface:#fff;--soft:#f5f8fc;--soft-blue:#eaf2ff;--success:#087443;--danger:#b42318;--shadow:0 10px 30px rgba(16,24,40,.08);--radius:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--soft);line-height:1.6}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%}button,input,select{font:inherit}.container{width:min(1180px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:1.08rem}.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#78a9ff);display:grid;place-items:center;color:#fff;font-weight:900}.nav-links{display:flex;align-items:center;gap:22px}.nav-links a{color:#344054;font-weight:600;font-size:.94rem}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px}.hero{background:linear-gradient(135deg,#f8fbff,#eaf2ff);border-bottom:1px solid var(--line);padding:66px 0 54px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:46px;align-items:center}.eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}h1{font-size:clamp(2.25rem,5vw,4.2rem);line-height:1.05;margin:12px 0 18px;letter-spacing:-.045em}.hero p{font-size:1.12rem;color:var(--muted);max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:11px 18px;border:1px solid var(--blue);font-weight:700;cursor:pointer}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-2);text-decoration:none}.btn-outline{background:#fff;color:var(--blue)}.hero-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:24px;padding:26px}.hero-stat{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.stat{padding:16px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}.stat strong{display:block;font-size:1.5rem}.section{padding:56px 0}.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-title{font-size:2rem;line-height:1.2;margin:0 0 4px}.section-subtitle{margin:0;color:var(--muted)}.search-row{display:grid;grid-template-columns:1fr auto;gap:12px;margin:24px 0}.search-input{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px 15px;background:#fff;outline:none}.search-input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(15,98,254,.1)}.filter-list{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.filter-btn{border:1px solid var(--line);border-radius:999px;background:#fff;color:#344054;padding:8px 13px;cursor:pointer}.filter-btn.active{background:var(--blue);border-color:var(--blue);color:#fff}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.tool-card{display:flex;flex-direction:column;min-height:286px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;transition:.2s ease}.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);text-decoration:none}.tool-icon{width:48px;height:48px;border-radius:14px;background:var(--soft-blue);display:grid;place-items:center;font-size:1.45rem;margin-bottom:16px}.tool-category{font-size:.82rem;color:var(--muted);margin-bottom:4px}.tool-card h3{font-size:1.2rem;line-height:1.25;margin:0 0 8px;color:var(--ink)}.tool-card p{margin:0 0 20px;color:var(--muted);font-size:.94rem}.tool-card .card-action{margin-top:auto;border:1px solid var(--blue);border-radius:8px;padding:8px 12px;text-align:center;color:var(--blue);font-weight:700}.category-block+.category-block{margin-top:48px}.category-heading{display:flex;align-items:center;gap:12px;margin-bottom:18px}.category-heading .tool-icon{margin:0}.country-grid,.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.info-card,.country-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.country-card h3,.info-card h3{margin:0 0 8px}.country-card p,.info-card p{color:var(--muted);margin:0}.tool-hero{padding:44px 0 26px;background:linear-gradient(135deg,#f8fbff,#eef5ff);border-bottom:1px solid var(--line)}.breadcrumbs{font-size:.84rem;color:var(--muted);margin-bottom:14px}.breadcrumbs a{color:var(--muted)}.tool-title-row{display:flex;align-items:flex-start;gap:16px}.tool-title-row .tool-icon{flex:0 0 auto}.tool-title-row h1{font-size:clamp(2rem,4vw,3.2rem);margin:0 0 12px}.tool-title-row p{margin:0;color:var(--muted);font-size:1.04rem}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:28px;align-items:start;padding-top:36px}.calculator-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}.calculator-card h2{margin-top:0}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:700;font-size:.9rem}.field small{color:var(--muted)}.field input,.field select{width:100%;border:1px solid #cfd9e7;border-radius:10px;padding:11px 12px;background:#fff;outline:none}.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(15,98,254,.1)}.calculate-btn{width:100%;margin-top:22px;border:0;border-radius:10px;background:var(--blue);color:#fff;padding:13px;font-weight:800;cursor:pointer}.calculate-btn:hover{background:var(--blue-2)}.result-panel{margin-top:22px;border:1px solid #b7d4ff;background:#f3f8ff;border-radius:14px;padding:20px}.result-panel[hidden]{display:none}.result-headline{font-size:1.45rem;font-weight:800;margin-bottom:14px}.result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.result-item{background:#fff;border:1px solid #d5e5ff;border-radius:10px;padding:13px}.result-label{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.result-value{font-size:1.16rem;font-weight:800;overflow-wrap:anywhere}.result-note{margin:14px 0 0;color:var(--muted);font-size:.88rem}.sidebar-card{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;text-align:center}.content-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.content-card h2{margin-top:0}.steps{counter-reset:step;list-style:none;padding:0}.steps li{position:relative;padding-left:42px;margin:15px 0}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:.78rem;font-weight:800}.formula-box{border-left:4px solid var(--blue);background:#f5f8fc;padding:16px;border-radius:0 12px 12px 0}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}.faq-list details+details{margin-top:10px}.faq-list summary{font-weight:800;cursor:pointer}.faq-list p{color:var(--muted);margin-bottom:0}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-link{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;color:var(--ink);font-weight:700}.related-link:hover{border-color:var(--blue);text-decoration:none}.notice{background:#fff7e8;border:1px solid #f3d294;border-radius:12px;padding:14px;color:#69410a}.recent-list{display:flex;gap:10px;flex-wrap:wrap}.recent-chip{border:1px solid var(--line);border-radius:999px;padding:7px 12px;background:#fff}.site-footer{background:#0c1426;color:#cbd5e1;padding:46px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.site-footer h3,.site-footer h4{color:#fff;margin-top:0}.site-footer a{display:block;color:#cbd5e1;margin:7px 0}.footer-bottom{margin-top:30px;padding-top:20px;border-top:1px solid #28344a;color:#94a3b8;font-size:.88rem}.sponsored-link{display:inline-flex!important;margin-top:12px!important;border:1px solid #53627b;border-radius:8px;padding:7px 11px;color:#e2e8f0!important;font-size:.82rem}.ad-zone{width:100%;text-align:center;overflow:visible}.ad-label{font-size:.63rem;text-transform:uppercase;letter-spacing:.12em;color:#98a2b3;margin-bottom:6px}.ad-frame{width:var(--ad-width);height:var(--ad-height);margin:auto;display:flex;align-items:flex-start;justify-content:center;overflow:hidden}.ad-native-frame{width:100%;min-height:90px}.ad-zone-responsive,.ad-zone-native,.ad-zone-rectangle{margin:28px auto}.ad-support-note{font-size:.72rem;color:#98a2b3}.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:14px;padding:30px;text-align:center;color:var(--muted)}.legal{max-width:850px}.legal h1{font-size:2.5rem}.legal h2{margin-top:32px}.legal p,.legal li{color:#475467}.hidden{display:none!important}
@media(max-width:1050px){.tool-grid{grid-template-columns:repeat(3,1fr)}.country-grid,.info-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.hero-grid,.tool-layout,.content-grid{grid-template-columns:1fr}.tool-layout{padding-top:26px}.sidebar-card{display:none}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 24px;flex-direction:column;align-items:flex-start}.nav-links.open{display:flex}.menu-btn{display:block}.footer-grid{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.tool-grid{grid-template-columns:repeat(2,1fr);gap:14px}.tool-card{padding:18px;min-height:270px}.field-grid,.result-grid{grid-template-columns:1fr}.hero{padding:46px 0}.hero-card{display:none}.hero-grid{display:block}.section{padding:42px 0}.country-grid,.info-grid{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}}
@media(max-width:470px){.tool-grid{grid-template-columns:1fr}.container{width:min(100% - 22px,1180px)}.calculator-card,.content-card{padding:20px}.tool-title-row{display:block}.tool-title-row .tool-icon{margin-bottom:14px}}
@media print{.site-header,.site-footer,.ad-zone,.sidebar-card,.calculate-btn{display:none!important}body{background:#fff}.calculator-card,.content-card{box-shadow:none}}